Sewing-machine.



F. CHATEAUNEUF.

SEWING MACHINE.

APPLICATION mln nov. l1. Isn.

l 1 90,726. Patented July l1, 1916.

Imvezzr.-

@ef-2.4;, Ik g at art, in a sewing 'machine having a direction.

l UNITED STATES PATENT oFFIcE.

FRANK CHATEAUNEUF, 0F HAVERHILL, MASSACHUSETTS, ASSIGNOR T0 UNITED SHOE MACHINERY COMPANY, 0F PATERSON, NEW JERSEY, vA CORPORATION JERSEY.

SEWING-MACHINE.

se'ciiieation of Letters Patent. Patented July 11,1516

Appi'icaiien'and November i7, 1911. serial No, 660,745.

To all whom t may concern:

Be it known" that I, FRANK CHATEAU- NEUF, a citizen of the United States, residing at Haverhill, in the county of vEssex and State of Massachusetts, have invented cer- `tain new and useful Improvementsin Sewin'g-h-Iachines; and I do hereby declare the following to be a full, clear, and exact de script'i'on ofthe invention, such as will en-v able otherssk'illed in the art to which it appertains to makeanduse the same.

This invention relates to .curved hook nee?l dle sewing machines 4and more particularly to a'looper mechanism for such machines.

VAs is well known to those skilled in the hook or barb needle the .thread is delivered to the needle` and laid in the barb thereofby a device terinedaloopen The looper 'is p rovided with athread guiding eye through which the thread passes"I located in position to coperate with the needle andthe looper is operatedto rotate the eye 4'-tliereo'ff aboutl `the needle at the beginning of theformation of eachfstitch and'thereby 'laythe thy-ad about the same.

The object of thelpresent invention is*l to produce a curved hook` needle sewing inachine having av novel and improved looper mechanism for laying the thread in the barb vof the needlein whiclrthe `looper is positively actuated'in every direction.-

In carrying out the above object the niachine is provided with a looper mechanism comprising an oscillatory lever., a looper lever mountedon the firstlever t0 v'oscillate therewith andvalso arranged "to Aoscillate independentlyY 'of the first lever'xin a plane an,- gula'r-'to Athe'plane of oscillation of the first lever and a lo'oper m'oiinted'oii the looper lever. rl`he said mechanism further com-4 prises means for oscillating'both' of s aid levers constructed and arpanged to impart positive movements to the loopei iii everV The firstlevei'" and the looper lever are preferablyarranged so that their planes of o scillationare substantially perpendicular to each other and so that the plane of oscillation of one of the levers is substantiall)v perpendicular to the plane of the needle. B v the combined movements of said levers the 'looper is operated to carriv the eve thereof about the i'ieedle.

Certain other features of the invention consist-of lcertain novel constructions. arrangements and eoinbiiiatiii's of pa rts,here

-said stud being arranged sii'bstaiitia'l position of t-heloo'per. The Ylooper nia vthe cbnstruetion illustrated or itvi'ii meer desa-ima and claimed, the -fnd'vfmtages of which will be obvious to one sleilled in the artfrom the-followingdescription. 13;

In the drawings illustrating the invention in its.` preferred forni, Figure I "isv af-fside elevation ofA a portion ofa curved hoiilt iiee-l d le sewing machine embodyingl the inivention. Fig. 2- is a front elevationoltlirif parts shown'in Fig. 1., 'Figa-'3 is a si'delele.A vation of the 1mechanism shown infFig'... l

Vtaken from the left hand side' ofthei'iiachine. Fig. L is a detail sectionala'jew taken on a line 4 4 of'Fig. -land Fig. 51mm-- detail sectional view ta-kenyonthe. liiie of Fig. 2. l 'j i Theinvention as illustrated .isval'iplie-d toA a welt and turn shoe sewing machine o-flthe we ll'known Goodyear type', and. ajssiich-mag chines are familiar to those skilledf--iiirgthe art, only so much thereof is showiieas is necessary for an understanding of; the '.presl -ent invention.: a f

Ingthe machine illustrated in thev the looper 1 is provided with a threlzi'uaiiding-eye formed by. a-thread tube coperate with the curved hook need peiidieular to the Aplane of the needle -i-,ii

formed-integral with said' looper leiter s iii constructed lseparate from said lever secured thereto in any suit-able iiiaiiiie .A slot T is formed iii tlie'looper .adjacent the Viniieiv endi of thelever t. alii-d bolt 8 is passed througlisaid s lot a`iidfis sf:- cui'ed iii a perforation iii th'e levert; to, restrain the looper lever l from lateral pioveiiieiit with relation to the lever ,(v wliileper niittiiig the looper lever. to osi-illatleffiii @the stud 5. The lever l is oseillated oii tli ""Sitiid 5 to give the desired forward and rea i"aJd iii i\'eiiieiis to the looper h v iiieaiis of ,ir` s lide 'S operating in a guide 1(l iii the 'fran held therein b v a cap plate 1l. The slide, is connected atits forward extreiiii'tii with the lever 4 and is rerii'irorat'ed iiisaid guide b v a closed cani .formed liyfa farefaiii and i gaulj ing the thread and is located Ain position to as needle;l the lever `6 l upon which the looper groove 12- in-tlie cam disk' 33,ear-ried by the main shaft let of the machine., invfhicli cam oove a er.- .ell l att-ached to the extremlty lof the slide is arrange-d to operate. The slide is connected with the lever it by means of. a block lt?, jcnrnaled on a pini?, clamped inthe forward extremity of 'the slide 9, said block beingr received. in' .a suitable slot 18 lever '4 to -eseillate about the stud 5 during the reciprocate?" movement ofthe slide 9..

The Ablock 16 v.is constructed o'considerfable v'vvidthf for ai purpose -ru-'hich 'willhereliinavfteii appear and' on "this account projects through theslotl beyondt-he vlever 4. The lever' is formedwvith al recess i9 toreceive` lthe forward extremityv of Asaid block and what longerthan the -bloelrl to permit the permit the same to move freely therein durlng the movements of the slide. Provision .is made for varying the pethfo'fmovement' of the 'lever and `theieby-ojthe looper so that thelooper'm'ay be caused to move 'in ..proper relation to the needlev by forming the slide 9 intwo parts indicated .at 2O and ,'21fand adjustably connecting-the parts by -means of a bolt 22passing through .a slot 23"i'n"t he part 21 and screi'v'edinto thepart with intermeshing teethupontheir engagingl vfaces t vPrevent the relative l'displace- I' ment of the partswhen clamped in adjusted In order that A direction to carry it across' the plane of the lever is mounted is pivoted uponfa stud 9A, preferably arrangedparallel `.v'ith the lates in a plane perpendicular vto the-plane of the needle. The rearv extremity of the lever 6 extei'ids upwardly over the cam disk 13 land the v*lever G. is oscillated upon the stud Z4 'tolimpart oscillations to the looper in a plane perpendicular-to the plane of the needle by a closed cam formed by a peripheral cam' groove 9,5, the faces of which engage a cam roll-26 attached to the extemityofv the lever G and 'operating in .said groove. As the-lever 6 isoscillated to ,impart movements to vthe loopervin a plane 'I perpendicular to the/plane -othe needle,

oscillatory movements arefimparted 'to vthe lever 4L thereby moving the looper forwardly and rearwardly ivithr'elation to the path of "the needle or'in'- direct-ion parallelwith the plane of the needle, the bloc-li' 16 because of i' its width'en'gaging in the slot t8 throughout t the lateral movements of the lever 4. There ".i's sufficient play between the block IG and `the faces of theslot 1S in the .lever 4 to pre vent bindingr of the block in the slot during the oscillatory.. movements of 'the lever 6 =about its axis` 'The thread leading from the source 4of the loop'er may `osc-illate in a 'supp-lv through the Waxpot andl Atension inet shown) extends overthe rolls :7.7 and of the 'take-up. :and from vthe Atake-up 2S downwardly through the 'eyeof thev looper. The combined oscillations imparted vvtothe `loope'r lever `4' and the lever-6 'result in a rotary movement needle.

of the looper'about the The mechanism for-operating the `lobper is simplel vin construction, certain' and ref made positive .in every direc-'tion and the liable in operation and inexpensive to .manuL facture, vThe 'movements of the looper are disadvantages-, incident to {the} use 'of l the'. i

spring actuated mechanisms'is avoidedi.

It. frequently,happens-that"the 'looper is Worn 'by the passing of the thread through` .to be discardedl In the present invefntion a removable thread tube` through which ,the

thread .passes is mounted Von the looper to ,f form the eye kthereof and.`f\vhen.this ftube be? j comes Worn 1t may be lremoved andr'replaced A Vby another,A

providingl an entire new: looper. In the f draiving the threadftu'be indicated .at 2l isv removably securedV inv 'a' 'split-' clamp' 29 'Y by means'of a clamp sc'rew-31.` Having explainedthe nature" and i obj ect of the. inventionfiandh'aving .described-one vformed in thefextremity 'of the loo-perarmv vthereby Asaving the expense of form of mechanism inj v vhich'it may: beem- I bodied, whatj-is elaimedisr' tion, stitch Fforming Y mechanism including a. .fcurved hook. needle,';'l `0oper mechanism comprising ay lever'm'ounted to osillate in a singleplane substantially perpendicular to the plane of: the needle, a. looper 'lever- A 105.

mounted on the forward end-,of said lever to oscillate in a planesuhstantially perpendicib lar tothe plane of oscillation, of the first lever., a. looper carried bythe looper lever, positivelyA acting 'means for loscillatingl Vthe lirst lever and positively actingfmean's for oscillating the l'ooper lever in timed rela' tion to the oscillating' movex'nentof the first lever to-carry the-'looper about the needle.

2. A. sewing machine,. having, in combina-v tion, sttchforming mechanism-.including a curved hook needle, -looper mechanism comll- A sewing-machine having, in combinaprising a lever-mountedto os'cillate above the needle in a. singleplane substantially ylever. a looper farried curved hook needle. looper rfnechanism com'- prismg a lever mounted to oscillate above 4the needle in a plane substantially perpenlof' the leverto oscillate in a plane substantially perpendicular to the plane 'of oscillation of the first lever and projecting below the first lever, a looper carried at the lower end of the looper lever, a slide'arranged to rmaal-)recate transversely it the line of' feed,

connections between the slide and the looper lever for oscillating the looper-lever 'from the slidtgnnmns tor actuating the slide and means 'for oscillating flnfirst lever.

l. A sewing mach having, in combination, stitch forming chanism including a curved hook needle. per mechanism comprising a lever mounted to oscillate in a plane suhstantiaily "perpendicular to the plane ot the needn., amper lever mounted on the forward end of said lever to oscillate in a plane substantially perpendicular to the plane of oscillation of the first'lever, a looper carried by said looper lever, a slide, connections between the slide and the looper lever for oscillating the looper leverfrom the slide. said slide having provision for adjustment to vary the path of movementof the looper.y ircans "ng the slide andineans "or arten he. first lever.

,3. fr sewing machine having, in combination, stitch forming mechanism including a curved hooi; needle, looper mechanism comprising a lever arranged to oscillate in a single plane, a looper lever mounted on said first lever to oscillate therewith and also arranged to oscillate independently of' the first lever in a plane substantially perpendicular to the plane ot' oscillation of the said first by said looper lever` positively acting means to oscillate said first lever and positively1 acting means to oscillate the second lever in timed relation to the oscillatory movements of the first lever to carry the looper about the needle.

G. A sewing machine having, in combination, stitch forming mechanism including a curved hook needle, looper mechanism colnprising a lever mounted tou oscillate in'a. single plane,\a looper lever arranged to osclllate with the first lever and also to oscillate independently ofthe first lever in a plane angular to the planeet oscillation of' the first lever, a cam roll on the first lever. a closed cam in which said cam roll operates for oscillating the first lever. and mechanism for oscillating the looper lever comprising a cam roll and a closed lam in which said cam roll operates.

7. A sewing machine having, 1n combination, stitch forming mechanism including al curved hoolt needle, looper mechanism comprising an oscillatory lever, a looper levei mounted on the first lever to oscillate therewith and also arranged to oscillate inde pendently of' the first lever in a plane substantially perpendicular to the plane of oscillation ot' the'first lever, a slide, connecf vtions between the slide and the looper lever for oscillating the looper lever, a cam roll on said slide, a closed cam engaging said roll for actuating said Slide, a cam roll on the first lever, and a closed cam engaging the last cam roll for oscillating the first lever. l

8. A sewing machine having, in combination, stitch formingr mechanism including a curved hook needle, looper mechanism coinprising a lever mounted to oscillate ina plane substantially perpendicular to the plane ot' the needle, a looper lever mounted on the first lever to oscillate therewith and also to voscillate independently of the first lever in ya plane substantially perlwndicular to the plane of oscillation of' the first lever, a slide-arranged to reciprocate transversely of' the line of' feed, a block carried by said slide and arranged to operate in a slot formed in said looper lever, means to reciprocate the slide and means to oscillate the first lever.

9. A sewing machine, having, in `combina-v tion, stitch forming mechanism including-a curved hook needle, looper mechanism comprising a'lever mounted to oscillate in a single plane, alooper lever mounted on' said first lever to oscillate therewith and also ar-` ranged to oscillate independently of the first lever in a plane angular to the plane of oscillation of' the first lever, a looper carried by said looper level-,.and positively acting means for oscillating said levers in timed relation to each other to carry the looper about the needle. 4

10. A sewing machine, having, in combination, stitch forming mechanism including a curved hook needle, looper mechanism comprising a lever mountedl to oscillate in a single plane, a looper lever mounted on said first lever to oscillate therewith and also. arranged to oscillate in a plane angular to," the plane of oscillation of said first lever; one of said levers heilig arranged to oscillate in a plane substantially perpelnlicular to the plane of' the needle, a looper carried by said looper lever,\and positively acting means for oscillating said levers in timed relation to each other to carry the looper about the needle. l

FRANK CHATEAUNEUF.

Witnesses:

CHAUNUEY M. Smonnnxux, WARREN G. OGDEN.' 

